To look at, see, or view for a period of time.
I'm tired of watching TV.
To observe over a period of time; to notice or pay attention.
Put a little baking soda in some vinegar and watch what happens.
To mind, attend, or guard.
He has to watch the kids that afternoon.
To be wary or cautious of.
You should watch that guy. He has a reputation for lying.
To attend to dangers to or regarding.
Watch what you say.
To remain awake with a sick or dying person; to maintain a vigil.
To be vigilant or on one's guard.
For some must watch, while some must sleep: So runs the world away.
To act as a lookout.
(of a buoy) To serve the purpose of a watchman by floating properly in its place.
To be awake.
To be on the lookout for; to wait for expectantly.